The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A134580 Numbers n such that n * Fibonacci(n) - 1 is prime. 2

%I #9 Dec 15 2017 17:37:07

%S 3,4,6,8,16,18,24,33,36,94,348,524,644,1218,1458,2064,2960,3591,5744,

%T 13056,27438,35193,43554

%N Numbers n such that n * Fibonacci(n) - 1 is prime.

%C Some of the larger entries may only correspond to probable primes.

%t Select[Range[1,1000],PrimeQ[#*Fibonacci[#]-1]&] (* _Julien Kluge_, Sep 20 2016 *)

%o (PARI) isok(n) = isprime(n*fibonacci(n) - 1); \\ _Michel Marcus_, Sep 20 2016

%Y Cf. A134313.

%K more,nonn

%O 1,1

%A _Jason Earls_, Jan 23 2008

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 12 10:35 EDT 2024. Contains 373331 sequences. (Running on oeis4.)